Gas Engines Questions or comments about gas engines can be posted here

DLE 55 RA Timing, What's Yours?

Reply

Old 12-02-2013, 04:00 PM
  #1  
bob_nj
Thread Starter
My Feedback: (62)
 
Join Date: Dec 2001
Location: Vineland, NJ
Posts: 3,850
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Question DLE 55 RA Timing, What's Yours?

[TABLE="class: tborder, width: 100%, align: center"]
[TR]
[TD="class: alt1, bgcolor: #F5F5FF"]This question was posted in another place with little to no response.
I usually search before asking questions.
I did and just got confused on this issue.

I can't find a manual online for the 55RA.
The side exhaust manual says timing should be 44 BTDC.

I've read posts where the timing is not set at 44

I picked up a used plane with a fairly new 55RA in it (S# 558) and it's timing is set at 33
Supposedly the plane had a few flights on it, so I guess it ran, but I didn't see it
run.
I have not run this engine yet.

Can someone tell me what your 55RA timing is set at, or should be?

Thanks
Bob
[/TD]
[/TR]
[/TABLE]
bob_nj is offline  
Reply With Quote
Old 12-02-2013, 04:09 PM
  #2  
All Day Dan
My Feedback: (5)
 
All Day Dan's Avatar
 
Join Date: Dec 2002
Location: MANHATTAN BEACH, CA
Posts: 4,605
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

See if these guys know. Dan.
http://www.dle-engines.com/
All Day Dan is offline  
Reply With Quote
Old 12-02-2013, 05:03 PM
  #3  
bob_nj
Thread Starter
My Feedback: (62)
 
Join Date: Dec 2001
Location: Vineland, NJ
Posts: 3,850
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

They do not.
You try.

Bob
bob_nj is offline  
Reply With Quote
Old 12-02-2013, 05:12 PM
  #4  
All Day Dan
My Feedback: (5)
 
All Day Dan's Avatar
 
Join Date: Dec 2002
Location: MANHATTAN BEACH, CA
Posts: 4,605
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Check page 14 of the one with side exhaust.
http://manuals.hobbico.com/dle/dleg0055-manual.pdf
All Day Dan is offline  
Reply With Quote
Old 12-02-2013, 05:17 PM
  #5  
bob_nj
Thread Starter
My Feedback: (62)
 
Join Date: Dec 2001
Location: Vineland, NJ
Posts: 3,850
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I did Dan.
Like I stated in my original post, it says 44

Quote-->
The side exhaust manual says timing should be 44 BTDC.

I've read posts where the timing is not set at 44 (end quote)

I've had those with bigger brains than me say that no gas engine should be timed over 30

I'm confused about the DLE manual.

Does anyone here have real numbers as to what their DLE55 RA timing is set at?

Thanks
Bob
bob_nj is offline  
Reply With Quote
Old 12-02-2013, 06:48 PM
  #6  
Truckracer
My Feedback: (19)
 
Join Date: Apr 2004
Location: Des Moines, IA
Posts: 4,888
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I believe it has been confirmed many times and in many different forums that the 44* figure is incorrect. Measured in the conventional manner, and that is CCW or normal rotation, 28 to 30 degrees is considered fairly standard for most of our engines and the DLE is no exception. It really isn't all that critical though and 33* is probably OK. It is certainly easy to back it off a bit from there if desired.

Too much advance may make the engine run rough, miss a bit, run hot, etc. With too little advance you just lose a bit of power. If the ignition is really retarded, the exhaust temperatures will soar and power will be way down.
Truckracer is offline  
Reply With Quote
Old 12-02-2013, 07:17 PM
  #7  
w8ye
My Feedback: (16)
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,563
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

From my experience, to advance the timing beyond 28 degrees, the power increase is less and less with farther advancement. Beyond around 34 degrees you begin to get into abnormal behavior.
w8ye is offline  
Reply With Quote
Old 12-02-2013, 07:49 PM
  #8  
SU-31 flyer
Member
 
SU-31 flyer's Avatar
 
Join Date: Aug 2002
Location: Burwell, NE
Posts: 87
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

If you get to advanced the engine will try to kick back when started. it can throw the prop also.
SU-31 flyer is offline  
Reply With Quote
Old 12-02-2013, 10:02 PM
  #9  
bob_nj
Thread Starter
My Feedback: (62)
 
Join Date: Dec 2001
Location: Vineland, NJ
Posts: 3,850
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Thanks guys.

I'll set it at 28 if the sensor has the adjustment.
If it does not I'll put another sensor on it.

Take care
Bob
bob_nj is offline  
Reply With Quote
Old 12-02-2013, 11:03 PM
  #10  
w8ye
My Feedback: (16)
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,563
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Just retard it as much as the bracket will allow. If it is 30 degrees it will be fine
w8ye is offline  
Reply With Quote
Old 12-02-2013, 11:08 PM
  #11  
bob_nj
Thread Starter
My Feedback: (62)
 
Join Date: Dec 2001
Location: Vineland, NJ
Posts: 3,850
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Thanks

I'm on it...
bob_nj is offline  
Reply With Quote
Old 12-03-2013, 02:04 AM
  #12  
bcchi
Senior Member
 
Join Date: Jan 2006
Location: riverton., WY
Posts: 975
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Originally Posted by bob_nj View Post
I did Dan.
Like I stated in my original post, it says 44

Quote-->
The side exhaust manual says timing should be 44 BTDC.

I've read posts where the timing is not set at 44 (end quote)

I've had those with bigger brains than me say that no gas engine should be timed over 30

I'm confused about the DLE manual.

Does anyone here have real numbers as to what their DLE55 RA timing is set at?

Thanks
Bob
28 to 30 degrees BTDC
BCCHI
bcchi is offline  
Reply With Quote
Old 12-03-2013, 02:18 AM
  #13  
bob_nj
Thread Starter
My Feedback: (62)
 
Join Date: Dec 2001
Location: Vineland, NJ
Posts: 3,850
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Thanks BC
bob_nj is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service